<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        const o = {uname : 'pink', age: 18}
        //1. 获取所有属性名
        console.log(Object.keys(o)) //返回数组['uname','age']
        //2.获取所有属性值
        console.log(Object.values(o)) //['pink', 18]
        // //3.对象的拷贝
        // const oo = {}
        // Object.assign(oo, o)
        // console.log(oo)

        Object.assign(o, {gender: '女'})
        console.log(o)
    </script>
</body>
</html>